NALENND®
North American Local Exchange NPA NXX Database™

The NALENND® NPA NXX database products provide comprehensive coverage of all active telephone exchange area code, central office prefix and thousands-block assignments within the North American Numbering Plan (NANP).

NALENND<sup>®</sup> North American Local Exchange NPA NXX Database™

The North American Numbering Plan (NANP) is an integrated telephone numbering plan serving 20 North American countries that share its numbering resources. These countries include the United States and its territories, Canada, Bermuda, Anguilla, Antigua & Barbuda, the Bahamas, Barbados, the British Virgin Islands, the Cayman Islands, Dominica, the Dominican Republic, Grenada, Jamaica, Montserrat, Sint Maarten, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Trinidad and Tobago, and Turks & Caicos.

Compiled directly from definitive industry and regulatory sources, NALENND® delivers current, accurate jurisdictional and associated data including block pooled indicator, portability indicator, NXX type (wireline, paging, cellular, VoIP etc.), Rate Center, Wire Center, switch CLLI code, OCN, LATA, MTA, V&H coordinates, Latitude, Longitude, Time Zone and Daylight Savings Indicators and more for all active NPA NXX thousands-block assignments suitable for use in a variety of mission critical applications.

Produced: on or before 5th calendar day monthly
Current Release: September 3, 2022
Distribution Frequency: monthly or quarterly (issue date: January, April, July, October)
Distribution Format: Internet download



Quick Comparison of the NALENND® North American Local Exchange NPA NXX Database™ Editions
 Wire Center Edition  Rate Center Edition  Platinum Edition  Gold Edition  
NPA (Area Code)YesYesYesYes
NXX (Central Office Code)YesYesYesYes
Thousands Block IdentifierYesYesYesYes
Thousands Block Pooled IndicatorYesYesYesYes
Local Access and Transport Area (LATA)YesYesYesYes
Local Interconnection Region (LIR)YesYesYesYes
NXX Type (land line, wireless, VoIP, etc.)YesYesYesYes
Thousands Block Contaminated FlagYesYesYesNo
State, Province or TerritoryYesYesYesYes
CountryYesYesYesYes
Wire Center NameYesYesYesNo
Wire Center V&H CoordinatesYesNoNoNo
Switch CLLI™ CodeYesYesYesYes
Rate Center Number Pooling StatusYesYesNoNo
Rate Center Type (Zoned, Suburban, etc.)YesYesNoNo
Rate Center NameYesYesYesYes
Rate Center V&H CoordinatesYesYesNoNo
Rate Center Industry AbbreviationYesYesNoNo
Time Zone AbbreviationYesYesYesNo
Daylight Saving Time Recognized FlagYesYesYesNo
ZIP or Postal Codes1YesYesYesYes
County or County Equivalent Codes2YesYesYesYes
Current Metropolitan Statistical Area Codes3YesYesYesYes
Historical Metropolitan Statistical Area Codes4 (MSA/PMSA)YesYesYesYes
Service Area Latitude and LongitudeYesYesYesYes
Carrier TypeYesYesYesYes
Carrier NECA assigned OCNYesYesYesYes
Original or Parent NPAYesYesYesYes
Block Scheduled for Disconnect FlagYesNoNoNo
Central Office Code Assignment Date 5YesNoNoNo
Central Office Code Effective Date 6YesNoNoNo
Major Trading Area (MTA)YesYesNoNo
Basic Trading Area (BTA)YesYesNoNo
NXX Detail Type (function)YesYesNoNo
Olson Database Time Zone IdentifierYesYesYesNo
Coordinated Universal Time (UTC)YesYesYesNo
Portability IndicatorYesNoNoNo

1 Each NPA NXX record may contain up to four U.S. Zip codes or four Canada Postal FSA codes.
2 U.S. FIPS county codes or Canadian Census Division codes may contain up to three.
3 U.S. CBSA codes or Statistics Canada CMA/CA codes.
4 U.S. (only) historical CMSA, PMSA, and MSA codes.
5 For those U.S. resources assigned through NANPA or the National Pooling Administrator.
6 Date block became active, last modified or scheduled for disconnect.